Fuse and electric appliance device

Abstract

The invention discloses a fuse and an electric appliance device, and relates to the field of fuses, the fuse comprises a shell, a first conductive member, second conductive members and an active fusing member, the first conductive member and the second conductive members are arranged in the shell, the two ends of the first conductive member are connected with the second conductive members along a first direction, and the active fusing member is connected with the first conductive member. A plurality of through holes which are arranged at intervals in the second direction are formed in the first conductive part, so that the part between every two adjacent through holes in the second direction is constructed as a weakening part, and the second direction is perpendicular to the first direction; the active fusing piece is arranged on the shell and corresponds to the weakening part; and the active fusing piece is configured to fuse the weakening part when being triggered. Therefore, by arranging the active fuse link and enabling the active fuse link to correspond to the weakening part, the active fuse link can be actively triggered to fuse the weakening part under special conditions, so that the fuse provided by the invention has an active fusing function, and the safety performance of the fuse is improved.

Description

Technical Field

[0001] This invention relates to the field of fuses, and more particularly to a fuse and an electrical device. Background Technology

[0002] In related technologies, existing fuses typically interrupt the current when abnormal conditions such as short circuits or overcurrents occur in the power circuit to ensure system safety. That is, existing fuses only have passive breaking function and do not have active breaking function. However, in some cases, such as when an electric vehicle is involved in a collision, the battery system is severely deformed, but abnormal conditions such as short circuits or overcurrents do not occur in the power circuit. In this case, even if the battery manager detects the risk, the fuse may not break, which may lead to a safety accident and has poor safety performance. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a fuse that can actively interrupt a circuit, thus providing better safety performance.

[0004] The present invention further proposes an electrical device.

[0005] The fuse according to the present invention includes: a housing, a first conductive element, a second conductive element, and an active fuse element. The first conductive element and the second conductive element are both disposed in the housing. Along a first direction, both ends of the first conductive element are connected to the second conductive element. The first conductive element has a plurality of through holes spaced apart along a second direction, such that the portion between two adjacent through holes along the second direction is configured as a weakened portion. The second direction is perpendicular to the first direction. The active fuse element is disposed in the housing and corresponds to the weakened portion. The active fuse element is configured to melt the weakened portion when triggered.

[0006] According to the present invention, by providing an active fuse element and aligning the active fuse element with the weakened part, the active fuse element can be actively triggered under special circumstances to cause the weakened part to melt, thereby giving the fuse proposed in this application an active fuse function, which is beneficial to improving the safety performance of the fuse.

[0007] In some examples of the present invention, the active fuse is disposed through the through hole, and the active fuse is provided on at least one side of the weakened portion along the second direction.

[0008] In some examples of the present invention, in the second direction, there is a through hole between every two adjacent active fuse elements, or the number of active fuse elements and the number of through holes are the same and correspond one-to-one.

[0009] In some examples of the present invention, there are multiple first conductive elements, which are arranged at intervals along the thickness direction of the first conductive elements. Each active fuse is disposed through the through hole of the multiple first conductive elements, and the thickness direction of the first conductive elements is perpendicular to both the first direction and the second direction.

[0010] In some examples of the present invention, the active fuse is provided on at least one side of the first conductive element along the thickness direction of the first conductive element, and the active fuse corresponds to the weakened portion along the thickness direction of the first conductive element, and the active fuse extends along the second direction.

[0011] In some examples of the present invention, there are multiple first conductive elements, and the multiple first conductive elements are arranged at intervals along the thickness direction of the first conductive elements; along the thickness direction of the first conductive elements, there are two first conductive elements between every two adjacent active fuse elements, or, an active fuse element is provided between every two adjacent first conductive elements.

[0012] In some examples of the present invention, a plurality of through holes spaced apart along the second direction are configured as a group of through holes, and the first conductive element forms a plurality of groups of the through holes spaced apart along the first direction.

[0013] There are multiple active fuse elements, and each weakened part corresponds to at least one active fuse element.

[0014] In some examples of the present invention, the fuse further includes: a lead wire and an insulating baffle, the lead wire including a first lead wire and a second lead wire, the insulating baffle being disposed on the housing and spaced apart from the second lead wire and the active fuse element, the first lead wire passing through the insulating baffle and connecting the active fuse element and the second lead wire.

[0015] In some examples of the present invention, the active fuse includes: an insulating shell and fuel, the insulating shell being wrapped around the fuel;

[0016] And / or, the active fuse is also configured to be triggered when the first conductive element generates an electric arc.

[0017] In some examples of the present invention, the fuse further includes an arc-extinguishing medium, wherein the arc-extinguishing medium is provided between each two adjacent first conductive elements.

[0018] The electrical device according to the present invention includes: a fuse, a battery, a control module, and an ignition drive module. The fuse is the aforementioned fuse. The control module is communicatively connected to the ignition drive module. The ignition drive module is configured to actively trigger the active fuse when the state of the electrical device meets preset conditions.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a partial cross-sectional view of a fuse according to an embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional schematic diagram of a fuse according to an embodiment of the present invention (first embodiment);

[0023] Figure 3 This is a partial structural schematic diagram of a fuse according to an embodiment of the present invention (first embodiment);

[0024] Figure 4 This is a partial structural schematic diagram of a fuse according to an embodiment of the present invention (first embodiment);

[0025] Figure 5 This is a schematic diagram of the assembly of the first conductive element and the active fuse element according to an embodiment of the present invention (first embodiment);

[0026] Figure 6 This is a schematic diagram of the weakened part melting process after the active fuse is ignited according to an embodiment of the present invention (first embodiment);

[0027] Figure 7 This is a schematic diagram of the weakened part melting after the active fuse is ignited according to an embodiment of the present invention (first embodiment);

[0028] Figure 8 This is a cross-sectional schematic diagram of a fuse according to an embodiment of the present invention (second embodiment);

[0029] Figure 9 This is a partial structural schematic diagram of a fuse according to an embodiment of the present invention (second embodiment);

[0030] Figure 10 This is a partial structural schematic diagram of a fuse according to an embodiment of the present invention (second embodiment);

[0031] Figure 11 This is a schematic block diagram of an electrical device according to an embodiment of the present invention;

[0032] Figure 12This is a schematic block diagram of an electrical device according to an embodiment of the present invention (another embodiment).

[0033] Figure label:

[0034] Fuse 100; Vehicle controller 200; Electrical components 300; Ignition drive module 400; Control module 500; Battery manager 600;

[0035] Casing 1;

[0036] First conductive element 2; through hole 21; weakening part 22;

[0037] Second conductive component 3; end cap 31; connector 32;

[0038] Active fuse 4;

[0039] Lead 5; First lead 51; Second lead 52;

[0040] Insulating baffle 6; Assembly hole 61;

[0041] Insulating sheath 7;

[0042] Arc-extinguishing medium 8. Detailed Implementation

[0043] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0044] The following is for reference. Figures 1-12 A fuse 100 according to an embodiment of the present invention is described.

[0045] like Figure 1 As shown, the fuse 100 according to an embodiment of the present invention includes: a housing 1, a first conductive element 2, a second conductive element 3, and an active fuse element 4. The first conductive element 2 and the second conductive element 3 are both disposed in the housing 1, along a first direction (i.e., Figures 1-10 (as shown in the X direction), both ends of the first conductive element 2 are connected to the second conductive element 3, and the first conductive element 2 is formed with multiple [parts] along the second direction (i.e., [the X direction is shown in the X direction]). Figure 1 , 3 Through holes 21 arranged at intervals along the Z direction (as shown in 5, 6, 7, 10) are used to allow the second direction (i.e., Figure 1 , 3 The portion between two adjacent through holes 21 in the Z direction (as shown in 5, 6, 7, and 10) is constructed as a weakened portion 22, and the second direction (i.e., Figure 1 , 3The Z direction shown in 5, 6, 7, and 10) and the first direction (i.e. Figures 1-10 The X direction shown is perpendicular; the active fuse 4 is provided on the housing 1 and corresponds to the weakened part 22. The active fuse 4 is configured to melt the weakened part 22 when triggered.

[0046] The housing 1 can be constructed as an insulating housing, and the first conductive element 2 is disposed on the housing 1. As some embodiments of this application, the housing 1 defines a receiving space, and the first conductive element 2 is received in the receiving space. As some embodiments of this application, the material of the housing 1 can be constructed as a high-temperature and high-pressure resistant insulating material such as ceramic or epoxy resin.

[0047] As some embodiments of this application, the first conductive element 2 can be constructed as a flat sheet-like melt. The material of the melt can be an alloy metal or a pure metal. Under normal circumstances, current can pass through to form a circuit. When the current is too large, it can partially melt to break the circuit and form protection.

[0048] The second conductive element 3 is disposed on the housing 1. As some embodiments of this application, the second conductive element 3 and the housing 1 can be fixedly connected. For example, the connection method between the second conductive element 3 and the housing 1 can be, but is not limited to, welding, snap-fit, bolting, etc. As some embodiments of this application, such as... Figure 1 , Figure 2 , Figure 8 , Figure 9 As shown, the second conductive element 3 may include an end cap 31 and a connecting piece 32. The end cap 31 and the connecting piece 32 can be fixedly connected. For example, the connection method between the end cap 31 and the connecting piece 32 can be, but is not limited to, welding connection, snap-fit ​​connection, bolt connection, etc., or the end cap 31 and the connecting piece 32 can be integrally formed. The second conductive element 3 is disposed on the housing 1. Specifically, the end cap 31 of the second conductive element 3 is disposed on the housing 1. As some embodiments of this application, the end cap 31 is fixedly connected to the housing 1. The connection method between the end cap 31 and the housing 1 can be, but is not limited to, welding connection, snap-fit ​​connection, bolt connection, etc.

[0049] As some embodiments of this application, the end cap 31 can be constructed of a highly conductive, high-hardness metal, which can be used to connect the first conductive element 2 and the terminal block 32, or it can be directly wired itself. The end cap 31 is connected to the housing 1 to form a closed space to protect the internal structure. The terminal block 32 can be constructed as a sheet-like part with circular or isosceles holes. The terminal blocks 32 of the two second conductive elements 3 can be used to connect the input and output terminals of the circuit that needs to be protected, respectively. The terminal blocks 32 have circular or isosceles holes and can be connected or fixed to other conductors or structures by means of bolts or other methods.

[0050] As some embodiments of this application, at least a portion of the terminal block 32 may be located outside the housing space to facilitate connection or fixation of the fuse 100 to other conductors or structures.

[0051] Along the first direction (i.e.) Figures 1-10 (As shown in the X direction), both ends of the first conductive element 2 are connected to the second conductive element 3. As some embodiments of this application, such as... Figure 1 , Figure 2 , Figure 8 , Figure 9 As shown, there are two second conductive elements 3, along the first direction (i.e. Figures 1-10 (as shown in the X direction), the two second conductive elements 3 are electrically connected to the two ends of the first conductive element 2 respectively (e.g., but not limited to welding connection).

[0052] The first conductive element 2 is formed with a plurality of components along the second direction (i.e.) Figure 1 , 3 The through holes 21, spaced apart along the Z direction (as shown in 5, 6, 7, 10), are, in some embodiments of this application, constructed as, but not limited to, circular, square, or polygonal holes. The number of through holes 21 can be multiple, for example, three, four, five, etc., with the multiple through holes 21 arranged along the second direction (i.e.,...). Figure 1 , 3 The Z-direction (as shown in 5, 6, 7, 10) are arranged at uniform intervals in sequence, as some embodiments of this application, such as... Figures 5-7 As shown, there are five through holes 21, and the five through holes 21 are along the second direction (i.e. Figure 1 , 3 The Z-direction (as shown in numbers 5, 6, 7, and 10) is arranged at uniform intervals. Along the second direction (i.e.... Figure 1 , 3 (As shown in Z direction in 5, 6, 7, 10), the part between two adjacent through holes 21 is a weakened part 22, that is, the connection between two adjacent through holes 21 is relatively weak, forming a point where current is easily broken, which is convenient for melting.

[0053] It should be noted that the second direction (i.e. Figure 1 , 3 The Z direction shown in 5, 6, 7, and 10) and the first direction (i.e. Figures 1-10 (The X direction shown is perpendicular to the X direction.)

[0054] An active fuse 4 is disposed on the housing 1. As in some embodiments of this application, the housing 1 defines a receiving space, and the active fuse 4 is received in the receiving space. The active fuse 4 corresponds to the weakened part 22, so that when the active fuse 4 is triggered, it melts the weakened part 22. It should be noted that the active fuse 4 can be detonated to melt the weakened part 22.

[0055] As some embodiments of this application, the active fuse 4 may include an insulating shell and fuel, with the insulating shell covering the outside of the fuel. After the fuel is ignited, the high temperature generated by the fuel combustion will cause the weakened part 22 to melt and vaporize, triggering the first conductive element 2 to disconnect. After disconnection, an electric arc will be generated at the fracture site, and the electric arc will further intensify until it is completely disconnected and extinguished.

[0056] Therefore, by setting the active fuse 4 and making the active fuse 4 correspond to the weakened part 22, the active fuse 4 can be actively triggered under special circumstances to make the weakened part 22 melt, thereby giving the fuse 100 proposed in this application an active melting function, which is beneficial to improving the safety performance of the fuse 100.

[0057] In some embodiments of the present invention (first embodiment), such as Figure 2 and Figure 5 As shown, the active fuse 4 passes through the through hole 21 and is along the second direction (i.e., Figure 1 , 3 (as shown in Z direction 5, 6, 7, 10), at least one side of the weakened part 22 is provided with an active fuse element 4.

[0058] In this embodiment, the active fuse element 4 passes through the through hole 21. As some embodiments of this application, there are multiple first conductive elements 2, with the multiple first conductive elements 2 arranged along the thickness direction of the first conductive element 2 (i.e., ...). Figure 2 , 4 The multiple first conductive elements 2 are arranged in a uniformly spaced manner along the Y direction (as shown in 8 and 9), and the through holes 21 of the multiple first conductive elements 2 are sequentially corresponding to each other, along the thickness direction of the first conductive elements 2 (i.e., Figure 2 , 4 The active fuse 4, as shown in the Y direction (as indicated by 8 and 9), passes through multiple through holes 21. Along the second direction (i.e., Figure 1 , 3 (as shown in Z direction in 5, 6, 7, 10), at least one side of the weakened part 22 is provided with an active fuse 4. As some embodiments of this application, one side of the weakened part 22 is provided with an active fuse 4. As some embodiments of this application, both sides of the weakened part 22 are provided with active fuse 4.

[0059] This arrangement ensures that the weakened portion 22 is destroyed upon detonation of the active fuse 4. Furthermore, by providing the active fuse 4 on at least one side of the weakened portion 22, the risk of the weakened portion 22 failing to melt after detonation of the active fuse 4 is reduced, thus improving the reliability of the fuse 100. Simultaneously, by providing the active fuse 4 on at least one side of the weakened portion 22, the active fuse 4 can be arranged in various configurations, allowing for selection based on actual needs and providing better choice.

[0060] In some embodiments of the present invention, such as Figure 2 and Figure 5 As shown, along the second direction (i.e. Figure 1 , 3 (as shown in Z direction 5, 6, 7, 10), there is a through hole 21 between every two adjacent active fuse elements 4, or the number of active fuse elements 4 and through holes 21 are the same and correspond one-to-one.

[0061] Along the second direction (i.e.) Figure 1 , 3 In the Z direction shown in 5, 6, 7, and 10, there is a through hole 21 between every two adjacent active fuse elements 4 (i.e., an active fuse element 4 is provided on one side of the weakened part 22). That is to say, along the second direction (i.e., Figure 1 , 3 In the Z direction (as shown in 5, 6, 7, 10), the active fuse element 4 is spaced apart and inserted into multiple through holes 21, that is, only one of every two adjacent through holes 21 has an active fuse element 4 inserted. Alternatively, the number of active fuse elements 4 and through holes 21 are the same and correspond one-to-one (that is, active fuse elements 4 are provided on both sides of the weakened part 22), that is, along the second direction (i.e. Figure 1 , 3 (As shown in Z direction 5, 6, 7, 10), the active fuse 4 is sequentially inserted into multiple through holes 21, that is, an active fuse 4 is inserted into each through hole 21.

[0062] This configuration allows the active fuse 4 to be detonated and then the weakened part 22 to be destroyed. Furthermore, it allows the active fuse 4 to have multiple arrangement forms, which can be selected according to actual needs, providing better selectivity.

[0063] In some embodiments of the present invention, such as Figure 2 As shown, there are multiple first conductive elements 2, and the multiple first conductive elements 2 are arranged along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 The active fuse 4 is arranged at intervals in the Y direction (as shown in 8 and 9), and each active fuse 4 passes through multiple through holes 21 of the first conductive element 2. The thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 The Y direction shown in 8 and 9) and the first direction (i.e. Figures 1-10 The X direction shown), the second direction (i.e. Figure 1 , 3 The Z-direction shown in 5, 6, 7, and 10 is perpendicular to the Z-direction.

[0064] The number of first conductive elements 2 can be multiple, for example, the number of first conductive elements 2 can be, but is not limited to, ten, twenty, thirty, etc. Along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4In the Y direction shown in Figures 8 and 9, multiple first conductive elements 2 are arranged sequentially at intervals. As some embodiments of this application, the number of first conductive elements 2 is twenty, along the thickness direction of the first conductive elements 2 (i.e., Figure 2 , 4 (As shown in Y direction in 8 and 9), twenty first conductive elements 2 are arranged sequentially at intervals.

[0065] Each active fuse element 4 is disposed through a plurality of through holes 21 in a plurality of first conductive elements 2. As some embodiments of this application, the plurality of first conductive elements 2 are formed with a plurality of holes along the second direction (i.e., Figure 1 , 3 The through holes 21 arranged at intervals in the Z direction (as shown in 5, 6, 7, 10) correspond to each other on every two adjacent first conductive elements 2, and each active fuse element 4 is sequentially inserted through the through holes 21 of multiple first conductive elements 2.

[0066] It should be noted that the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 , the Y direction shown in 8 and 9), the first direction (i.e. Figures 1-10 The X direction shown), the second direction (i.e. Figure 1 , 3 Any two directions in the Z direction (shown in 5, 6, 7, 10) are perpendicular to each other.

[0067] By setting multiple first conductive elements 2, the conductivity of the fuse 100 can be improved, resulting in better performance. Furthermore, by having each active fuse element 4 pass through the through holes 21 of multiple first conductive elements 2, the circuit can be effectively broken and the current can be interrupted, resulting in better reliability.

[0068] In some embodiments of the present invention (second embodiments), such as Figure 8 As shown, along the thickness direction of the first conductive element 2 (i.e. Figure 2 , 4 (as shown in Y direction in 8 and 9), at least one side of the first conductive element 2 is provided with an active fuse 4, and along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 (as shown in Y direction in 8 and 9), the active fuse element 4 corresponds to the weakened part 22, and the active fuse element 4 is along the second direction (i.e., Figure 1 , 3 (Extend in the Z direction as shown in 5, 6, 7, 10).

[0069] Among them, along the thickness direction of the first conductive element 2 (i.e. Figure 2 , 4 As shown in the Y direction of 8 and 9, at least one side of the first conductive element 2 is provided with an active fuse 4. As some embodiments of this application, along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 (As shown in Y direction in 8 and 9), an active fuse 4 is provided on one side of the first conductive element 2, that is, along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 As shown in the Y direction (as indicated by 8 and 9), there are two first conductive elements 2 spaced apart between every two adjacent active fuse elements 4. In some embodiments of this application, active fuse elements 4 are provided on both sides of the first conductive element 2, that is, along the thickness direction of the first conductive element 2 (i.e.,...). Figure 2 , 4 (As shown in Y direction in 8 and 9), there is a first conductive element 2 between every two adjacent active fuse elements 4.

[0070] Along the thickness direction of the first conductive element 2 (i.e. Figure 2 , 4 (As shown in Y direction in 8 and 9), the active fuse 4 corresponds to the weakening part 22. As some embodiments of this application, the central axis of the active fuse 4 coincides with the line connecting the center points of the multiple corresponding through holes 21.

[0071] As some embodiments of this application, an arc-quenching material (e.g., but not limited to, quartz sand, boric acid, etc.) may be filled between every two adjacent first conductive elements 2, along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 (As shown in Y direction in 8 and 9), the first conductive element 2 and the arc-extinguishing material are stacked sequentially, and the active fuse element 4 is disposed on the arc-extinguishing material and corresponds to the weakening part 22. The active fuse element 4 is along the second direction (i.e., Figure 1 , 3 (Extend in the Z direction as shown in 5, 6, 7, 10).

[0072] This arrangement allows the active fuse 4 to detonate and destroy the weakened portion 22. Furthermore, by providing the active fuse 4 on at least one side of the first conductive element 2, the risk of the weakened portion 22 not melting after the active fuse 4 detonates is reduced, thus improving the reliability of the fuse 100. Simultaneously, by providing the active fuse 4 on at least one side of the first conductive element 2, the active fuse 4 can be arranged in various configurations, allowing for selection based on actual needs, providing better choice. Moreover, compared to the technical solution of inserting the active fuse 4 through the through hole 21, this method allows any single active fuse 4 to directly melt the entire row of weakened portions 22 upon detonation.

[0073] In some embodiments of the present invention, such as Figure 8 As shown, there are multiple first conductive elements 2, and the multiple first conductive elements 2 are arranged along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 Arranged at intervals in the Y direction as shown in 8 and 9; along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 (As shown in Y direction in 8 and 9), there are two first conductive elements 2 between every two adjacent active fuse elements 4, or, there is an active fuse element 4 between every two adjacent first conductive elements 2.

[0074] The number of first conductive elements 2 can be multiple, for example, the number of first conductive elements 2 can be, but is not limited to, ten, twenty, thirty, etc. Along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 In the Y direction shown in Figures 8 and 9, multiple first conductive elements 2 are arranged sequentially at intervals. As some embodiments of this application, the number of first conductive elements 2 is twenty, along the thickness direction of the first conductive elements 2 (i.e., Figure 2 , 4 (As shown in Y direction in 8 and 9), twenty first conductive elements 2 are arranged sequentially at intervals.

[0075] Along the thickness direction of the first conductive element 2 (i.e. Figure 2 , 4 In the Y direction shown in Figures 8 and 9, there are two first conductive elements 2 spaced between every two adjacent active fuse elements 4. That is, along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 (As shown in Y direction in 8 and 9), each first conductive element 2 has an active fuse 4 on one side, or, along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 In the Y direction shown in Figures 8 and 9, an active fuse 4 is provided between every two adjacent first conductive elements 2. That is to say, along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 (as shown in Y direction in 8 and 9), each first conductive element 2 has an active fuse element 4 on both sides.

[0076] This configuration allows the active fuse 4 to be detonated and then the weakened part 22 to be destroyed. Furthermore, it allows the active fuse 4 to have multiple arrangement forms, which can be selected according to actual needs, providing better selectivity.

[0077] In some embodiments of the present invention, multiple along the second direction (i.e. Figure 1 , 3 The through holes 21 arranged at intervals along the Z direction (as shown in 5, 6, 7, 10) constitute a group of through holes. The first conductive element 2 forms multiple groups along the first direction (i.e., Figures 1-10 A group of through holes arranged at intervals in the X direction (as shown);

[0078] There are multiple active fuse elements 4, and each weakening part 22 corresponds to at least one active fuse element 4.

[0079] Among them, multiple along the second direction (i.e. Figure 1 , 3 The through holes 21 arranged at intervals along the Z direction (as shown in 5, 6, 7, and 10) constitute a group of through holes. It can be understood that a group of through holes includes multiple through holes on the first conductive element 2 arranged along the second direction (i.e.,...). Figure 1 , 3 Through holes 21 are arranged at intervals along the Z direction (as shown in 5, 6, 7, and 10). The first conductive element 2 has multiple sets of through holes arranged along the first direction (i.e., along the Z direction). Figures 1-10 The through-hole groups are arranged at intervals along the X direction (as shown). That is, the first conductive element 2 has multiple through-hole groups. For example, the first conductive element 2 can form, but is not limited to, three, four, or five through-hole groups, and the multiple through-hole groups are arranged along the first direction (i.e., Figures 1-10 Arranged at intervals in the X direction as shown.

[0080] As a first specific embodiment of this application, the number of first conductive elements 2 is one, and multiple conductive elements are arranged along the second direction (i.e., Figure 1 , 3 The active fuse elements 4, arranged at intervals along the Z direction (as shown in 5, 6, 7, and 10), constitute a fuse element group. Multiple fuse element groups are arranged along the first direction (i.e., Figures 1-10 The multiple sets of fuse elements are arranged at intervals in the X direction shown. Multiple sets of fuse elements correspond to multiple sets of through holes. The number of active fuse elements 4 in the fuse elements group is the same as the number of through holes 21 in the corresponding through hole group and they correspond to each other. The active fuse elements 4 are inserted into the corresponding through holes 21 so that each weakened part 22 corresponds to at least one active fuse element 4.

[0081] As a second specific embodiment of this application, such as Figure 2 As shown, compared with the first specific embodiment, the difference in the second specific embodiment is that the number of first conductive elements 2 is multiple, and the multiple first conductive elements 2 are arranged along the thickness direction of the first conductive elements 2 (i.e., Figure 2 , 4 The active fuse elements 4 are arranged at intervals along the Y direction (as shown in Figures 8 and 9), and each active fuse element 4 is inserted along the thickness direction of the first conductive element 2 (i.e., along the Y direction). Figure 2 , 4 Multiple through holes 21 are arranged at intervals in the Y direction as shown in Figures 8 and 9, and corresponding to each other.

[0082] As a third specific embodiment of this application, the number of the first conductive element 2 is one, and the number of active fuse elements 4 is multiple and along the first direction (i.e., Figures 1-10 The active fuse elements 4 are arranged at intervals along the X direction (as shown), and each active fuse element 4 is arranged along the second direction (i.e., Figure 1 , 3 The Z-direction (as shown in 5, 6, 7, 10) extends and corresponds to a group of through holes, so that each weakened part 22 corresponds to at least one active fuse element 4.

[0083] As a fourth specific embodiment of this application, such as Figure 8 As shown, compared with the third specific embodiment, the difference in the fourth specific embodiment is that the number of first conductive elements 2 is multiple, and the multiple first conductive elements 2 are arranged along the thickness direction of the first conductive elements 2 (i.e., Figure 2 , 4 The active fuse elements 4 are arranged at intervals along the Y direction (as shown in Figures 8 and 9). Furthermore, the multiple active fuse elements 4 are constructed as multiple fuse element groups, with each fuse element group having multiple active fuse elements 4 arranged along the thickness direction of the first conductive element 2 (i.e., along the Y direction). Figure 2 , 4 The fuse groups are arranged at intervals along the Y direction (as shown in 8 and 9), and each group of fuse elements corresponds to a through-hole group of each first conductive element 2. Multiple groups of fuse elements are arranged along the first direction (i.e., Figures 1-10 Arranged at intervals in the X direction shown, in each group of fuse elements, an active fuse element 4 is provided between each pair of adjacent first conductive elements 2 corresponding through hole groups, or, between each pair of adjacent active fuse elements 4, there are two pairs of corresponding through hole groups of first conductive elements 2.

[0084] By forming multiple sets of conductive elements 2 along the first direction (i.e. Figures 1-10 The through-hole groups (as shown in the X direction) are arranged at intervals, and each weakened part 22 corresponds to at least one active fuse 4. After the active fuse 4 is detonated, as long as one of the weakened parts 22 formed by the through-hole groups is melted, the melting effect can be achieved. This arrangement can significantly improve the safety performance of the fuse 100.

[0085] In some embodiments of the present invention, such as Figure 3 , Figure 4 , Figure 9 , Figure 10 As shown, the fuse 100 further includes: a lead wire 5 and an insulating baffle 6. The lead wire 5 includes a first lead wire 51 and a second lead wire 52. The insulating baffle 6 is disposed in the housing 1 and spacees the second lead wire 52 from the active fuse element 4. The first lead wire 51 passes through the insulating baffle 6 and connects the active fuse element 4 and the second lead wire 52. The lead wire 5 includes a first lead wire 51 and a second lead wire 52, which can be electrically connected, or the first lead wire 51 and the second lead wire 52 can be integrally formed. The insulating baffle 6 is disposed in the housing 1; for example, the insulating baffle 6 can be disposed within a receiving space. The insulating baffle 6 spacees the second lead wire 52 from the active fuse element 4; that is, the insulating baffle 6 is located between the second lead wire 52 and the active fuse element 4, and spaces the second lead wire 52 from the active fuse element 4.

[0086] As some embodiments of this application, the number of first leads 51 is multiple, and the number is the same as that of active fuse elements 4. All the multiple first leads 51 are along the thickness direction of the first conductive element 2 (i.e., Figure 2 ,4 Extending in the Y direction as shown in Figures 8 and 9, multiple first leads 51 are respectively connected to multiple active fuse elements 4, and multiple first leads 51 are all connected to second leads 52.

[0087] The first lead 51 passes through the insulating baffle 6 and is connected between the active fuse 4 and the second lead 52. As some embodiments of this application, an assembly hole 61 is formed on the insulating baffle 6, the first lead 51 passes through the assembly hole 61, and the second lead 52 is located at the end of the insulating baffle 6 away from the active fuse 4. One end of the first lead 51 can be electrically connected to the active fuse 4, and the other end of the first lead 51 can be electrically connected to the second lead 52.

[0088] This facilitates the simultaneous detonation of multiple active fuses 4, resulting in a significant fusing effect. Furthermore, by setting an insulating baffle 6, the lead wire 5 can be separated from other components. The insulating baffle 6 can withstand the operating voltage of the first conductive element 2, thereby reducing the risk of detonation of the lead wire 5 due to high voltage breakdown and improving the reliability of the fuse 100 of this application.

[0089] In some embodiments of the present invention, the active fuse 4 includes: an insulating shell and fuel, wherein the insulating shell is wrapped around the outside of the fuel;

[0090] And / or, the active fuse 4 is also configured to be triggered when the first conductive element 2 generates an electric arc.

[0091] The active fuse 4 includes an insulating shell and fuel, with the insulating shell covering the outside of the fuel. Alternatively, the active fuse 4 is configured to be triggered when the first conductive element 2 generates an electric arc.

[0092] The active fuse 4 may include an insulating shell and fuel. The insulating shell covers the outside of the fuel, and the insulating shell and the insulating baffle 6 can be fixedly connected, for example, by adhesive bonding or snap-fit ​​connection. The insulating shell has good insulation properties, which can reduce the risk of high-voltage conduction between the active fuse 4 and the first conductive element 2; the insulating shell has good sealing properties, which can reduce the risk of fuel failure caused by fuel leakage or the ingress of other substances; the insulating shell has good heat resistance, which can reduce the risk of deformation and cracking of the insulating shell caused by the heating of the first conductive element 2; the insulating shell can melt and burn in time after the fuel ignites, accelerating the fuse breakage; the insulating shell, together with the fuel, can reduce the risk of fuel spontaneous combustion when the fuse 100 of this application is operating normally.

[0093] The active fuse 4 is also configured to be triggered when the first conductive element 2 generates an electric arc. As some embodiments of this application, when the fuse 100 normally blows during overcurrent, it will generate an electric arc. The generated electric arc and heat can melt or ignite the insulating shell, thereby triggering fuel ignition.

[0094] As some embodiments of this application, when the first conductive element 2 generates an electric arc, it can actively ignite the fuel. For example, when the first conductive element 2 generates an electric arc, it can actively ignite the fuel through the lead wire 5. The combustion of the fuel can further accelerate the melting of the weakened part 22 and improve the safety performance of the fuse 100.

[0095] In some embodiments of the present invention, such as Figures 1-4 , Figure 9 , Figure 10 As shown, the housing 1 defines a receiving space, in which the first conductive element 2, the active fuse element 4, and the insulating baffle 6 are all received, and at least a portion of the second conductive element 3 extends out of the receiving space; and / or, the fuse 100 further includes: an insulating sleeve 7, which passes through the second conductive element 3, and a lead wire 5 passes through the insulating sleeve 7.

[0096] The housing 1 defines a receiving space, in which the first conductive element 2, the active fuse element 4, and the insulating baffle 6 are all received. At least a portion of the second conductive element 3 extends out of the receiving space. Alternatively, the fuse 100 may also include an insulating sleeve 7, which passes through the second conductive element 3, and a lead wire 5 passes through the insulating sleeve 7.

[0097] At least a portion of the second conductive element 3 extends out of the receiving space. As some embodiments of this application, a portion of the second conductive element 3 extends out of the receiving space. For example, a portion of the end cap 31 is received in the receiving space, and the wiring piece 32 and another portion of the end cap 31 extend out of the receiving space. As some embodiments of this application, all of the second conductive element 3 extends out of the receiving space. For example, both the end cap 31 and the wiring piece 32 extend out of the receiving space.

[0098] By defining a receiving space with housing 1, it is convenient to install and store the various components of fuse 100, and by allowing at least a portion of the second conductive element 3 to extend out of the receiving space, it is convenient to connect the terminal block 32 to other components.

[0099] The fuse 100 also includes an insulating sleeve 7. In some embodiments of this application, the insulating sleeve 7 can be made of insulating materials such as ceramics or epoxy resin, capable of withstanding the high voltage during fuse 100 operation and possessing certain heat resistance and wear resistance, thus reducing the risk of leakage due to damage to the insulating sleeve 7 during installation or use. The insulating sleeve 7 passes through the second conductive element 3. In some embodiments of this application, the insulating sleeve 7 can pass through the end cap 31, which has a mounting hole adapted to the insulating sleeve 7. The insulating sleeve 7 passes through the mounting hole. The lead 5 passes through the insulating sleeve 7; specifically, the second lead 52 passes through the insulating sleeve 7.

[0100] By providing an insulating sheath 7, the risk of leakage in the fuse 100 caused by the connection between the lead 5 and the second conductive element 3 can be reduced, thereby improving the reliability of the fuse 100 in this application.

[0101] In some embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 8 As shown, the fuse 100 also includes an arc-extinguishing medium 8, with an arc-extinguishing medium 8 provided between each pair of adjacent first conductive elements 2.

[0102] An arc-quenching medium 8, i.e., the aforementioned arc-quenching material, is provided between every two adjacent first conductive elements 2. The arc-quenching medium 8 can be constructed as, but is not limited to, quartz sand, boric acid, etc. As some embodiments of this application, the arc-quenching medium 8 is housed in a housing space along the thickness direction of the first conductive element 2 (i.e., Figure 2 , 4 (As shown in Y direction in 8 and 9), the first conductive element 2 and the arc-extinguishing medium 8 are alternately stacked in sequence.

[0103] By providing an arc-extinguishing medium 8 between each pair of adjacent first conductive elements 2, the arc-extinguishing performance of the fuse 100 can be improved, fault current can be interrupted, overvoltage can be limited, system safety can be ensured, equipment damage can be prevented, and the risk of injury to operators and maintenance personnel caused by arcing, high-temperature molten metal splashing, explosion and other issues resulting from fuse 100 failure can be reduced.

[0104] The electrical device according to an embodiment of the present invention includes: a fuse 100, a battery, a control module 500, and an ignition drive module 400. The fuse 100 is the same as the fuse 100 described in the above embodiment. The control module 500 is communicatively connected to the ignition drive module 400. The ignition drive module 400 is configured to actively trigger the active fuse 4 when the state of the electrical device meets preset conditions.

[0105] Among them, as some embodiments of this application, such as Figure 11As shown, the electrical device also includes an electrical component 300, and the battery, fuse 100, and electrical component 300 form a circuit. The control module 500 is communicatively connected to the ignition drive module 400 (e.g., via wire or wireless connection). When the state of the electrical device meets preset conditions (e.g., when a short circuit occurs in the circuit, or the current is too high, or when the battery fails), the control module 500 can control the ignition drive module 400 to actively trigger the active fuse 4, causing the fuse 100 to melt the circuit and disconnect the current to protect the electrical device. As some embodiments of this application, the control module 500 can be communicatively connected to the vehicle controller 200 and, based on signals from the vehicle controller 200, control the ignition drive module 400 to trigger the active fuse 4, causing the fuse 100 to melt the circuit. As some embodiments of this application, the ignition drive module 400 can be communicatively connected to other controllers of the vehicle and can, based on signals from other controllers, trigger the active fuse 4, causing the fuse 100 to melt the circuit.

[0106] As some embodiments of this application, the control module 500 and the ignition drive module 400 can be integrated into the battery manager 600. The battery manager 600 can understand the working status of the battery in real time through signal acquisition, and can communicate and exchange information with the vehicle controller 200 in real time through communication modes such as CAN bus.

[0107] Therefore, by setting the active fuse 4 and making the active fuse 4 correspond to the weakened part 22, the active fuse 4 can be actively triggered under special circumstances to make the weakened part 22 melt, thereby giving the fuse 100 proposed in this application an active melting function, which is beneficial to improving the safety performance of the fuse 100.

[0108] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0109] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0110] In the description of this invention, "a plurality of" means two or more.

[0111] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0112] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0113] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0114] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fuse, characterized in that, include: case; A first conductive element and a second conductive element are both disposed on the housing. Along the first direction, both ends of the first conductive element are connected to the second conductive element. The first conductive element has a plurality of through holes arranged at intervals along the second direction, so that the part between two adjacent through holes along the second direction is constructed as a weakened part. The second direction is perpendicular to the first direction. An active fuse is disposed in the housing and corresponds to the weakened portion, and the active fuse is configured to cause the weakened portion to melt when triggered.

2. The fuse according to claim 1, characterized in that, The active fuse is disposed in the through hole, and the active fuse is provided on at least one side of the weakened portion along the second direction.

3. The fuse according to claim 2, characterized in that, Along the second direction, there is a through hole between every two adjacent active fuse elements, or the number of active fuse elements and the number of through holes are the same and correspond one-to-one.

4. The fuse according to claim 2, characterized in that, There are multiple first conductive elements, which are arranged at intervals along the thickness direction of the first conductive elements. Each active fuse is disposed through the through hole of the multiple first conductive elements. The thickness direction of the first conductive elements is perpendicular to both the first direction and the second direction.

5. The fuse according to claim 1, characterized in that, Along the thickness direction of the first conductive element, at least one side of the first conductive element is provided with the active fuse element, and along the thickness direction of the first conductive element, the active fuse element corresponds to the weakened portion, and the active fuse element extends along the second direction.

6. The fuse according to claim 5, characterized in that, There are multiple first conductive elements, and the multiple first conductive elements are arranged at intervals along the thickness direction of the first conductive element; Along the thickness direction of the first conductive element, there are two first conductive elements spaced apart between every two adjacent active fuse elements, or, there is an active fuse element between every two adjacent first conductive elements.

7. The fuse according to any one of claims 1-6, characterized in that, Multiple through holes arranged at intervals along the second direction constitute a group of through holes, and the first conductive element forms multiple groups of the through holes arranged at intervals along the first direction. There are multiple active fuse elements, and each weakened part corresponds to at least one active fuse element.

8. The fuse according to any one of claims 1-6, characterized in that, Also includes: The device includes a lead wire and an insulating baffle. The lead wire includes a first lead wire and a second lead wire. The insulating baffle is disposed on the housing and separates the second lead wire from the active fuse. The first lead wire passes through the insulating baffle and connects the active fuse and the second lead wire.

9. The fuse according to any one of claims 1-6, characterized in that, The active fuse includes: an insulating shell and fuel, wherein the insulating shell is wrapped around the outside of the fuel; And / or, the active fuse is also configured to be triggered when the first conductive element generates an electric arc.

10. The fuse according to any one of claims 1-6, characterized in that, Also includes: An arc-extinguishing medium is provided between every two adjacent first conductive elements.

11. An electrical device, characterized in that, include: The device includes a fuse, a battery, a control module, and an ignition drive module. The fuse is one according to any one of claims 1-10. The control module is communicatively connected to the ignition drive module. The ignition drive module is configured to actively trigger the active fuse when the state of the electrical device meets a preset condition.

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